Eyelid Surgery

Number: 0084

Policy

Acquired Ptosis

Aetna considers any of the following procedures medically necessary when the criteria described below are met:

  1. Blepharoplasty is considered medically necessary for any of the following indications:

    1. To correct prosthesis difficulties in an anophthalmia socket; or 
    2. To remove excess tissue of the upper eyelid causing functional visual impairment when the following criteria are met:
       
      1. Photographs in straight gaze show redundant eyelid tissue overhanging the upper eyelid margin or resting on or pushing down on the eye lashes Note: Excess tissue beneath the eye rarely obstructs vision, so the lower lid blepharoplasty is rarely covered for this indication); and
      2. Documentation of a visual field test without the eyelid or brow taped, showing points of visual loss inside the twenty-five degree circle of the superior field, that is corrected when taped and shows improvement in the superior field with no visual loss inside the forty-degree circle of the superior field; or
    3. To relieve painful symptoms of blepharospasm; or 
    4. To treat peri-orbital sequelae of thyroid disease and nerve palsy, and peri-orbital sequelae of other nerve palsy (e.g., the oculomotor nerve); or
    5. Lower lid blepharoplasty to relieve excessive lower lid bulk only if proper positioning of prescription eyeglasses is precluded and is secondary to conditions such as: chronic systemic corticosteroid therapy, dermatomyositis, Graves’ disease, myxedema, nephrotic syndrome, polymyositis, scleroderma, Sjögren’s syndrome, or systemic lupus erythematosus
  2. Ptosis (blepharoptosis) repair for laxity of the muscles of the upper eyelid causing functional visual impairment when the following criteria are met:
     
    1. Documentation of a visual field test without the eyelid or brow taped showing points of visual loss inside the 25-degree circle of the superior field, that is corrected when taped and shows improvement in the superior field with no visual loss inside the 40-degree circle of the superior field; and
    2. Photographs in straight gaze show the margin reflex difference (distance from the upper lid margin to the reflected corneal light reflex at normal gaze) of 2 mm or less with the eyes in a straight gaze; and
    3. Photographs of the individual looking straight ahead demonstrating the eyelid at or below the upper edge of the pupil
  3. Brow ptosis repair for laxity of the forehead muscles causing functional visual impairment when the following criteria are met:
     
    1. Photographs show the eyebrow below the supra-orbital rim; and
    2. Documentation of a visual field test without the brow taped, shows points of visual loss inside the 25-degree circle of the superior field that is corrected when taped, and shows improvement in the superior field with no visual loss inside the 40- degree circle of the superior field; and
    3. Brow ptosis is causing a functional impairment of upper/outer visual fields with documented interference with vision or visual field related activities such as difficulty reading due to upper eyelid drooping, looking through the eyelashes or seeing the upper eyelid skin.
  4. Eyelid ectropion or entropion repair is considered medically necessary to repair defects predisposing to corneal or conjunctival injury due to ectropion (eyelid turned outward), entropion (eyelid turned inward), or pseudotrichiasis (inward direction of eyelashes due to entropion) when selection criteria are met.

    Selection Criteria for Ectropion

    Clear high-quality, clinical photographs must document the presence of an ectropion, and corneal or conjunctival injury with both of the following: 

    • Subjective symptoms including either excess tearing, or pain/discomfort; and
    • Any one of the following --
       
      • corneal ulcer,
      • exposure keratitis, or
      • kerato-conjunctivitis

    Selection Criteria for Entropion

    Clear high-quality, clinical photographs must document the following:

    Lid turned inward; and at least one of the following:

    • Trichiasis or irritation of cornea or conjunctiva; and
    • Subjective symptoms including either excessive tearing, or pain/discomfort.
  5. Upper eyelid tightening procedures (block resection or tarsal strip with lateral canthal tightening) for member who has refractory corneal or conjunctival inflammation related to exposure from floppy eyelid syndrome.

  6. Canthoplasty/Canthopexy is considered medically necessary for the following indications:

    1. As part of a medically necessary blepharoplasty procedure to correct eyelids that sag so much that they pull down the upper eyelid so that vision is obstructed;or as an adjunct to a medically necessary ectropion or entropion repair or
    2. For reconstruction of the eyelid following resection of benign or malignant lesions involving the medial or lateral canthus; or
    3. For management of exposure keratoconjunctivitis resulting from proptosis with lower lid retraction following orbital decompression surgery for Grave’s ophthalmopathy or Crouzon’s syndrome.
  7. For members with unilateral disease meeting criteria for the above-listed procedures, surgery of the contralateral eye may be considered medically necessary to obtain symmetry.

Note: Where medical necessity criteria indicate need for photographs, photos must be taken with the eyes not dilated or squinting.  Photos are to be taken at eye level and depicting a frontal view.  Photos must be of sufficient quality to show the light reflex on the cornea, and demonstrate the lid margins in relation to the pupil.

Excess upper eyelid skin, upper eyelid ptosis, or brow ptosis can be present alone or in any combination, and each may require correction.  If both a blepharoplasty and ptosis repair are requested, 2 photographs may be necessary to demonstrate the need for both procedures: 1 photograph should show the excess skin above the eye resting on the eyelashes, and a 2nd photograph should show persistence of lid lag, with the upper eyelid crossing or slightly above the pupil margin, despite lifting the excess skin above the eye off of the eyelids with tape.  If all 3 procedures (i.e., blepharoplasty, blepharoptosis repair, and brow ptosis repair) are requested, 3 photographs may be necessary.

Congenital Ptosis

Aetna considers surgical correction of congenital ptosis medically necessary to allow proper visual development in infants and children when the following criteria are met:

  1. Infant or child has congenital ptosis (present at birth and detected within the first year of life); and
  2. Ptosis interferes with field of vision (visual field testing not required); and
  3. Child has abnormal head posture (e.g., head tilt or turn, chin up or chin down), amblyopia or strabismus.

Surgery is considered cosmetic if performed for mild ptosis that is only of cosmetic concern.

Periorbital Microcystic Lymphatic Malformation with Blepharoptosis

Aetna considers intralesional bleomycin injection experimental and investigational for the treatment of periorbital microcystic lymphatic malformation with blepharoptosis because its effectiveness has not been established.

See also CPB 0031 - Cosmetic Surgery.

Background

Blepharoplasty refers to surgery to remove excess skin and fatty tissue around the eyes.  Blepharochalasis is a term used to refer to loose or baggy skin (dermatochalasis) above the eyes, so that a fold of skin hangs down, often concealing the tarsal margin when the eye is open.  In severe cases, excess skin and fat above the eyes can sit on the upper eyelid and may obstruct the superior field of vision.  Blepharochalasis may cause pseudoptosis (false ptosis), where the patient has a normal ability to elevate the eyelid, but bagging skin above the eye overhangs the eyelid margin, resembling ptosis.  In some cases, excess skin around the eye may cause the eyelashes to turn in and to irritate the eye, or turn outward, resulting in exposure keratitis.

Surgical removal of these overhanging skin folds may improve the function of the upper eyelid and restore peripheral vision.  Blepharoplasty is also performed for cosmetic reasons to improve a sagging, tired appearance, and is the second most common aesthetic procedure performed by plastic surgeons.  For coverage of this procedure, photographs in straight gaze should show sagging tissue above the eyes that is resting on or pushing down on the eyelashes.

Blepharoplasty to remove excess tissue either above or below the eyes may also be medically necessary and covered to correct prosthesis difficulties in an anophthalmia socket, to repair defects caused by trauma or tumor-ablative surgery, to correct an entropion (inward turned eyelid) or ectropion (outward turned eyelid), to treat peri-orbital sequelae of thyroid disease and nerve palsy, and to relieve painful blepharospasm.

Ptosis (also called blepharoptosis) is the term for drooping of one or both upper eyelids.  This may occur in varying degrees from slight drooping to complete closure of the involved eyelid.  In the most severe cases, the drooping can obstruct the visual field and cause positional head changes.  There are 2 types of ptosis:
  1. acquired and
  2. congenital. 

Acquired ptosis is more common.  Congenital ptosis is present at birth.  Ptosis may occur because the levator muscle's attachment to the lid is weakening with age.  Acquired ptosis can also be caused by a number of different things, such as disease that impairs the nerves, diabetes, injury, tumors, inflammation, or aneurysms.  Congenital ptosis may be caused by a problem with nerve innervation or a weak muscle.  Drooping eyelids may also be the result of diseases such as myotonic dystrophy or myasthenia gravis.  The primary symptom of ptosis is a drooping eyelid.  Adults will notice a loss of visual field because the upper portion of the eye is covered.  Children who are born with a ptosis usually tilt their head back in an effort to see under the obstruction.  Some people raise their eyebrows in order to lift the lid slightly and therefore may appear to be frowning.

Diagnosis of ptosis is usually made by observing the drooping eyelid.  Ptosis is usually treated surgically.  Surgery can generally be done on an outpatient basis under local anesthetic.  For minor drooping, a small amount of the eyelid tissue can be removed.  For more pronounced ptosis the approach is to surgically shorten the levator muscle or connect the lid to the muscles of the eyebrow.  Or, the aponeurosis can be re-attached to the tarsal plate if it had separated.  Correcting the ptosis is usually done only after determining the cause of the condition.

Ptosis (blepharoptosis) repair for laxity of the muscles of the upper eyelid causing functional visual impairment is covered when photographs in straight gaze show the eyelid margin across the midline or at the most 1 or 2 mm above the midline of the pupil (see Figure).

Figure: Diagram of upper lid margin crossing the pupil

To demonstrate the medical necessity of both blepharoplasty and ptosis (blepharoptosis) repair, 2 sets of photographs may be needed.  One set of photographs (front and side views) should demonstrate the excess skin above the eyes resting on the eyelashes.  A second set of photographs should be taken with the excess skin lifted off of the eyelashes (such as by taping the excess skin to the forehead), and demonstrating persistence of ptosis with the lid margin across the midline of the pupil or 1 to 2 mm above the pupil midline.

Brow ptosis refers to sagging tissue of the eyebrows and/or forehead.  In extreme cases, brow ptosis can obstruct the field of vision.  Brow ptosis is caused by aging changes in the forehead muscle and skin, which leads to weakening of these tissues and sagging of the eyebrows.  Brow ptosis is treated surgically with the specific operation being based on the amount and location of the brow ptosis.

Brow ptosis surgery is usually performed under local anesthesia as an outpatient procedure.  Excess skin and muscle is excised and the deep tissues are sutured together.  Brow ptosis repair for laxity of the forehead muscles causing functional visual impairment is covered when photographs show the eyebrow below the supra-orbital rim.

Often brow ptosis coexists with eyelid ptosis and dermatochalasis; in these cases, ptosis surgery and blepharoplasty may be performed at the time of the brow ptosis surgery.  The medical necessity of each surgical procedure may need to be demonstrated with separate photographs: 1 photograph should show the eyebrow below the supra-orbital rim, a 2nd photograph with the sagging forehead lifted up in order to see the sagging tissue above the eye resting on the eyelashes, and then a 3rd with the sagging tissue lifted off of the eyelid in order to see the persistent lid lag (ptosis).

Canthoplasty, also known as inferior retinacular suspension or lateral retinacular suspension, involves tightening the muscles or ligaments that provide support to the outer corner of the eyelid.  This procedure may be medically necessary where drooping of the outer corner of the eyelid interferes with vision.

Visual field testing measures the entire scope of vision by creating an individual "map" of each eye. With one eye covered, the individual responds to light and/or various intensities of movement by pushing a button, allowing the computer to generate a map of the visual fields. Testing may be completely automated or performed by a technician with or without the assistance of a machine. Testing the central 24 degrees or 30 percent of the visual field is most commonly used.

Visual field testing alone is not sufficient to determine the presence of excess upper eyelid skin, upper eyelid ptosis, or brow ptosis.  A patient could cause a visual field defect by lowering their lids during the test.  Photographs that document eyelids crossing the pupils provide additional support for the need of surgery.

If visual field tests are performed, the tests should show loss of 2/3 or greater of a visual field in the upper or temporal areas documented by computerized visual field studies, with visual field restored by taping or holding up the upper lid.

An UpToDate review on ptosis (Lee, 2013) states that “In patients with third nerve [oculomotor nerve] palsy, an interval of 6 to 12 months before surgical intervention is advised because many will have spontaneous recovery.  Similarly, patients with MG [myasthenia gravis] should have stable disabling ptosis for several months on maximal medical therapy before considering surgical therapy”.

Intralesional Bleomycin Injection

Yang et al (2015) stated that peri-orbital microcystic lymphatic malformations (LM) can cause severe symptoms, such as blepharoptosis, amblyopia, chemosis, strabismus, diminished vision, and blindness.  In a retrospective study, these researchers evaluated the clinical outcome in peri-orbital microcystic LM patients with blepharoptosis who underwent surgical treatment combined with intralesional bleomycin injection.  A total of 9 patients diagnosed as peri-orbital microcystic LM with blepharoptosis were included in this study.  All of them underwent surgical treatment and bleomycin injection from January 2010 to January 2014.  The lesion was resected through the lower eyebrow and/or a coronal incision at the first stage, and levator resection was performed at the second stage.  Any persistent lesion or its recurrence was managed by intralesional bleomycin injection.  Blepharoptosis and visual obstruction were corrected in all patients.  Mean follow-up was 24.6 months; 6 patients had recurrence during follow-up; and 2 patients who had partial eyelid closure after the second stage surgery recovered in 3 months.  Amblyopia, astigmatism, and strabismus were not improved after treatment.  All patients had excellent aesthetic improvement and corrected blepharoptosis.  The authors concluded that resection through a lower eyebrow and coronal incision and levator resection performed in 2 stages can quickly correct the visual impairment caused by peri-orbital microcystic LM with blepharoptosis.  They stated that intralesional bleomycin injection is a promising adjunctive therapy for residual or recurrent lesions after surgery.

Table: CPT Codes / HCPCS Codes / ICD-10 Codes
Code Code Description

Information in the [brackets] below has been added for clarification purposes.   Codes requiring a 7th character are represented by "+":

Blepharoplasty:

CPT codes covered if selection criteria are met:

15820 Blepharoplasty, lower eyelid
15821     with extensive herniated fat pad [excess tissue beneath the eye rarely obstructs vision so lower lid blepharoplasty is rarely covered for this indication]
15822 Blepharoplasty, upper eyelid
15823     with excessive skin weighing down lid

ICD-10 codes covered if selection criteria are met:

C44.101 - C44.1992 Other and unspecified malignant neoplasm of skin of eyelid, including canthus
D21.0 Benign neoplasm of connective and other soft tissue of head, face and neck [Medial or lateral canthus]
H02.001 - H02.059 Entropion and trichiasis of eyelid
H02.831 Dermatochalasis of right upper eyelid
H02.834 Dermatochalasis of left upper eyelid
H04.201 - H04.219 Epiphora unspecified as to cause and due to excess lacrimation
H05.89 Other disorders of orbit [Endocrine exophthalmos]
Z85.828 Personal history of other malignant neoplasm of skin [medial or lateral canthus]
Z86.018 Personal history of other benign neoplasm [medial or lateral canthus]

Ptosis repair:

CPT codes covered if selection criteria are met:

67900 Repair of brow ptosis (supraciliary, mid-forehead or coronal approach)
67901 Repair of blepharoptosis; frontalis muscle technique with suture or other material (e.g., banked fascia)
67902     frontalis muscle technique with autologous fascial sling (includes obtaining fascia)
67903     (tarso) levator resection or advancement, internal approach
67904     (tarso) levator resection or advancement, external approach
67906     superior rectus technique with fascial sling (includes obtaining fascia)
67908     conjunctivo-tarso-Muller's muscle-levator resection (e.g., Fasanella-Servat type)
67909 Reduction of overcorrection of ptosis

Other CPT codes related to the CPB:

11900 - 11901 Injection, intralesional
92081 - 92083 Visual field examination [not routinely necessary for excess upper eyelid skin, upper eyelid ptosis, or brow ptosis]

ICD-10 codes covered if selection criteria are met:

H02.401 - H02.439 Ptosis of eyelid [causing functional visual impairment]
Q10.0 Congenital ptosis [moderate to severe]

Intralesional bleomycin injection:

HCPCS codes not covered for indications listed in the CPB:

J9040 Injection, bleomycin sulfate, 15 units

ICD-10 codes not covered for indications listed in the CPB:

I89.9 Other specified noninfective disorders of lymphatic vessels and lymph nodes [peri-orbital microcystic lymphatic malformation with blepharoptosis]
Q15.8 Other specified congenital malformations of eye [peri-orbital microcystic lymphatic malformation with blepharoptosis]

Ectropion repair:

CPT codes covered if selection criteria are met:

67914 Repair of ectropion; suture
67915     thermocauterization
67916     excision tarsal wedge
67917     extensive (eg, tarsal strip operations)

ICD-10 codes covered if selection criteria are met:

H02.101- H02.139 Ectropion of eyelid
H02.151 - H02.159 Paralytic ectropion
Q10.1 Congenital ectropion

Entropion repair:

CPT codes covered if selection criteria are met:

67921 Repair of entropion; suture
67922     thermocauterization
67923     excision tarsal wedge
67924     extensive (eg, tarsal strip or capsulopalpebral fascia repairs operation)

ICD-10 codes covered if selection criteria are met::

H02.001 - H02.039 Entropion of eyelid
Q10.2 Congenital entropion

Canthoplasty/Canthopexy :

CPT codes covered if selection criteria are met:

21280 Medial canthopexy
21282 Lateral canthopexy
61330 Decompression of orbit only, transcranial approach
67414 Orbitotomy without bone flap (frontal or transconjunctival approach); with removal of bone for decompression
67445 Orbitotomy with bone flap or window, lateral approach (e.g., Kroenlein); with removal of bone for decompression
67950 Canthoplasty (reconstruction of canthus)

ICD-10 codes covered if selection criteria are met:

H02.001 - H02.039 Entropion of eyelid
H02.101 - H02.139 Ectropion of eyelid
H02.401 - H02.439 Ptosis of eyelid
H16.211 - H16.219 Exposure keratoconjunctivitis

The above policy is based on the following references:

  1. Lessner AM, Fagien S. Laser blepharoplasty. Semin Ophthalmol. 1998;13(3):90-102.
  2. Mahe E. Lower lid blepharoplasty-The transconjunctival approach: Extended indications. Aesthetic Plast Surg. 1998;22(1):1-8.
  3. Apfelberg DB. Summary of the 1997 ASAPS/ASPRS Laser Task Force Survey on laser resurfacing and laser blepharoplasty. American Society for Aesthetic Plastic Surgery. American Society of Plastic and Reconstructive Surgeons. Plast Reconstr Surg. 1998;101(2):511-518.
  4. Baylis HI, Goldberg RA, Kerivan KM, et al. Blepharoplasty and periorbital surgery. Dermatol Clin. 1997;15(4):635-647.
  5. Kikkawa DO, Kim JW. Lower-eyelid blepharoplasty. Int Ophthalmol Clin. 1997;37(3):163-178.
  6. Stephenson CB. Upper-eyelid blepharoplasty. Int Ophthalmol Clin. 1997;37(3):123-132.
  7. Friedland JA, Jacobsen WM, TerKonda S. Safety and efficacy of combined upper blepharoplasties and open coronal browlift: A consecutive series of 600 patients. Aesthetic Plast Surg. 1996;20(6):453-462.
  8. Fedok FG, Perkins SW. Transconjunctival blepharoplasty. Facial Plast Surg. 1996;12(2):185-195.
  9. Adamson PA, Strecker HD. Transcutaneous lower blepharoplasty. Facial Plast Surg. 1996;12(2):171-183.
  10. Pastorek N. Upper-lid blepharoplasty. Facial Plast Surg. 1996;12(2):157-169.
  11. Older JJ. Ptosis repair and blepharoplasty in the adult. Ophthalmic Surg. 1995;26(4):304-308.
  12. American Academy of Ophthalmology. Functional indications for upper and lower eyelid blepharoplasty. Ophthalmology. 1995;102(4):693-695.
  13. American Society of Plastic and Reconstructive Surgeons. Blepharoplasty Position Paper. Arlington Heights, IL: American Society of Plastic and Reconstructive Surgeons, Inc.; October 1990.
  14. American Optometric Association. Care of the patient with amblyopia. Optometric Clinical Practice Guideline No. 4. 2nd ed. St. Louis, MO: American Optometric Association; 1997.
  15. Meyer DR, Linberg JV, Powell SR, Odom JV. Quantitating the superior visual field loss associated with ptosis. Arch Ophthalmol. 1989;107(6):840-843.
  16. Kikkawa DO, Miller SR, Batra MK, et al. Small incision nonendoscopic browlift. Ophthal Plast Reconstr Surg. 2000;16(1):28-33.
  17. Sakol PJ, Mannor G, Massaro BM. Congenital and acquired blepharoptosis. Curr Opin Ophthalmol. 1999;10(5):335-339.
  18. Burnstine MA, Putterman AM. Upper blepharoplasty: A novel approach to improving progressive myopathic blepharoptosis. Ophthalmology. 1999;106(11):2098-2100.
  19. Biesman BS. Blepharoplasty. Semin Cutan Med Surg. 1999;18(2):129-138.
  20. Januszkiewicz JS, Nahai F. Transconjunctival upper blepharoplasty. Plast Reconstr Surg. 1999;103(3):1015-1019.
  21. Davies RP. Surgical options for eyelid problems. Aust Fam Physician. 2002;31(3):239-245.
  22. American Academy of Ophthalmology. Laser blepharoplasty and skin resurfacing. Ophthalmology. 1998;105(11):2154-2159.
  23. Dailey RA, Saulny SM. Current treatments for brow ptosis. Curr Opin Ophthalmol. 2003;14(5):260-266.
  24. Shields M, Putterman A. Blepharoptosis correction. Curr Opin Otolaryngol Head Neck Surg. 2003;11(4):261-266.
  25. Frueh BR, Musch DC, McDonald HM. Efficacy and efficiency of a small-incision, minimal dissection procedure versus a traditional approach for correcting aponeurotic ptosis. Ophthalmology. 2004;111(12):2158-2163.
  26. Edmonson BC, Wulc AE. Ptosis evaluation and management. Otolaryngol Clin North Am. 2005;38(5):921-946.
  27. Benatar M, Kaminski H. Medical and surgical treatment for ocular myasthenia. Cochrane Database Syst Rev. 2006;(2):CD005081.
  28. Hatt S, Antonio-Santos A, Powell C, Vedula SS. Interventions for stimulus deprivation amblyopia. Cochrane Database Syst Rev. 2006:(3):CD005136.
  29. Gündisch O, Vega A, Pfeiffer MJ, Hintschich C. The significance of intraoperative measurements in acquired ptosis surgery. Orbit. 2008;27(1):13-18.
  30. Scuderi N, Chiummariello S, De Gado F, et al. Surgical correction of  blepharoptosis using the levator aponeurosis-Müller's muscle complex readaptation technique: A 15-year experience. Plast Reconstr Surg. 2008;121(1):71-78.
  31. Rougraff PM, Tse DT, Johnson TE, Feuer W. Involutional entropion repair with fornix sutures and lateral tarsal strip procedure. Ophthal Plast Reconstr Surg. 2001;17(4):281-287.
  32. Ho SF, Pherwani A, Elsherbiny SM, Reuser T. Lateral tarsal strip and quickert sutures for lower eyelid entropion. Ophthal Plast Reconstr Surg. 2005;21(5):345-348.
  33. Barnes JA, Bunce C, Olver JM. Simple effective surgery for involutional entropion suitable for the general ophthalmologist. Ophthalmology. 2006;113(1):92-96.
  34. Fong KC, Mavrikakis I, Sagili S, Malhotra R. Correction of involutional lower eyelid medial ectropion with transconjunctival approach retractor plication and lateral tarsal strip. Acta Ophthalmol Scand. 2006;84(2):246-249.
  35. Kumar S, Kamal S, Kohli V. Levator plication versus resection in congenital ptosis - a prospective comparative study. Orbit. 2010;29(1):29-34.
  36. de Figueiredo AR. Blepharoptosis. Semin Ophthalmol. 2010;25(3):39-51.
  37. Bedran EG, Pereira MV, Bernardes TF. Ectropion. Semin Ophthalmol. 2010;25(3):59-65.
  38. Cahill KV, Bradley EA, Meyer DR, et al. Functional indications for upper eyelid ptosis and blepharoplasty surgery: A report by the American Academy of Ophthalmology. Ophthalmology. 2011;118(12):2510-2517.
  39. Chang S, Lehrman C, Itani K, Rohrich RJ. A systematic review of comparison of upper eyelid involutional ptosis repair techniques: Efficacy and complication rates. Plast Reconstr Surg. 2012;129(1):149-157.
  40. Broujerdi JA. Aesthetic surgery of the orbits and eyelids. Oral Maxillofac Surg Clin North Am. 2012;24(4):665-695.
  41. Lee MS. Overview of ptosis. UpToDate [online serial]. Waltham, MA: UpToDate; reviewed October 2013.
  42. SooHoo JR, Davies BW, Allard FD, Durairaj VD. Congenital ptosis. Surv Ophthalmol. 2014;59(5):483-492.
  43. Al-Abbadi Z, Sagili S, Malhotra R. Outcomes of posterior-approach 'levatorpexy' in congenital ptosis repair. Br J Ophthalmol. 2014;98(12):1686-1690.
  44. Hong SP, Song SY, Cho IC. Under-through levator complex plication for correction of mild to moderate congenital ptosis. Ophthal Plast Reconstr Surg. 2014;30(6):468-472.
  45. Yang X, Jin Y, Lin X, et al. Management of periorbital microcystic lymphatic malformation with blepharoptosis: Surgical treatment combined with intralesional bleomycin injection. J Pediatr Surg. 2015;50(8):1393-1397.
  46. An SH, Jin SW, Kwon YH, et al. Effects of upper lid blepharoplasty on visual quality in patients with lash ptosis and dermatochalasis. Int J Ophthalmol. 2016;9(9):1320-1324.
  47. Hahn S, Holds JB, Couch SM. Upper lid blepharoplasty. Facial Plast Surg Clin North Am. 2016;24(2):119-127.
  48. Pacella E, Mipatrini D, Pacella F, et al. Suspensory materials for surgery of blepharoptosis: A systematic review of observational studies. PLoS One. 2016;11(9):e0160827.
  49. Lee JH, Aryasit O, Kim YD, et al. Maximal levator resection in unilateral congenital ptosis with poor levator function. Br J Ophthalmol. 2017;101(6):740-746.
  50. Alfano C, Chiummariello S, De Gado F, et al. Lateral canthoplasty -- 10-year experience. Acta Chir Plast. 2006;48(3):85-88.
  51. Schaefer DP. The graded levator hinge procedure for the correction of upper eyelid retraction (an American Ophthalmological Society thesis). Trans Am Ophthalmol Soc. 2007;105:481-512.
  52. Hashem AM, Couto RA, Waltzman JT, et al. Evidence-based medicine: A graded approach to lower lid blepharoplasty. Plast Reconstr Surg. 2017;139(1):139e-150e.
  53. American Society of Plastic Surgeons. ASPS recommended insurance coverage criteria for third-party payers. Blepharoplasty. Available at http://www.plasticsurgery.org/medical_professionals/health_policy/recommended-insurance-coverage-criteria-papers.cfm. Accessed September 10, 2018.
  54. No authors listed. Local coverage determination (LCD): Blepharoplasty (L33944). Last revised 10/1/2015. Available at: https://www.aao.org/assets/7efb0bd7-41f0-4871-a6d8-a75b11e1208f/635963381087630000/cgs-bleph-l33944-04-2016-pdf?inline=1. Accessed September 10, 2018.
  55. Centers for Medicare & Medicaid Services. Local coverage article:  Blepharoplasty - Medical policy article (A52837). Last revised 1/1/2018. Available at: https://www.cms.gov/medicare-coverage-database/details/article-details.aspx?articleId=52837&ver=15&Date=&DocID=A52837&bc=hAAAABAAAAAA&. Accessed September 10, 2018.
  56. Ing E. Ectropion treatment & management. Medscape. Updated: July 20, 2018. Available at: https://emedicine.medscape.com/article/1212398-treatment. Accessed September 10, 2018.